spark BlockTransferListener 源码
spark BlockTransferListener 代码
文件路径：/common/network-shuffle/src/main/java/org/apache/spark/network/shuffle/BlockTransferListener.java
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.spark.network.shuffle;
import java.util.EventListener;
import org.apache.spark.network.buffer.ManagedBuffer;
/**
* This interface unifies both {@link BlockFetchingListener} and {@link BlockPushingListener}
* under a single interface to allow code reuse, while also keeping the existing public interface
* to facilitate backward compatibility.
*/
public interface BlockTransferListener extends EventListener {
/**
* Called once per successfully transferred block.
*/
void onBlockTransferSuccess(String blockId, ManagedBuffer data);
/**
* Called at least once per block transfer failures.
*/
void onBlockTransferFailure(String blockId, Throwable exception);
/**
* Return a string indicating the type of the listener such as fetch, push, or something else
*/
String getTransferType();
}
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